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How fast is 613 meters per second?

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It's about nine-tenths as fast as a Jet Fighter.
In other words, 613 meters per second is 0.910 times the speed of a Jet Fighter, and the speed of a Jet Fighter is 1.10 times that amount.
(for Lockheed Martin F-16, a.k.a. Fighting Falcon, a.k.a. Viper) (maximum speed at altitude)
An F-16's maximum speed at altitude is approximately 660 meters per second. The F-16 has a flight ceiling of approximately 15 km (9.32 mi).
It's about two-thirds as fast as a Bullet (Rifle).
In other words, the speed of a Bullet (Rifle) is 1.490 times 613 meters per second.
(5.56 x 45 mm, a.k.a. 5.56 NATO)
A 5.56 x 45 mm cartridge is fired at a velocity of 915 meters per second. As the NATO rifle cartridge, it is used by the military forces of more than thirty-one countries, including use in the M16 series, M4 Carbine, HK-416, and M249 Squad automatic weapons used by the United States armed forces.
It's about one-and-three-fifths times as fast as a Bullet (Handgun).
In other words, the speed of a Bullet (Handgun) is 0.6250 times 613 meters per second.
(for .40 Smith & Wesson 135 grain Sierra JHP, VV 3N37 powder, Fed. 100 primer, Remington case) (muzzle velocity)
A 0.40 caliber Smith & Wesson bullet has a muzzle a velocity of 383 meters per second. This type of ammunition has been the standard issue round of the United States Federal Bureau of Investigation (FBI) since 1990.
It's about one-and-four-fifths times as fast as The Speed of Sound.
In other words, 613 meters per second is 1.790 times the speed of The Speed of Sound, and the speed of The Speed of Sound is 0.5590 times that amount.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 343 meters per second. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 1,497 m/s to 1,560 m/s in water, depending on its salinity.
It's about five-and-a-half times as fast as a Peregrine Falcon.
In other words, 613 meters per second is 5.680 times the speed of a Peregrine Falcon, and the speed of a Peregrine Falcon is 0.1760 times that amount.
(a.k.a. Peregrine, a.k.a. Duck Hawk, Falco peregrinus)
The Peregrine Falcon can reach speeds of up to 108 meters per second when diving. Falcons are sometimes sent to scare smaller birds away from airports to improve air traffic safety and were used in World War II to intercept carrier pigeons used by enemy forces.
It's about six-and-a-half times as fast as The CRH (train).
In other words, the speed of The CRH (train) is 0.160 times 613 meters per second.
(a.k.a. Hexie Hao, 和谐号, a.k.a. 和諧號, a.k.a. Héxié Hào, a.k.a. "Harmony")
The CRH-3 train which runs on China's Beijing-Tianjin Intercity Railway are capable of speeds up to 97 meters per second. Theses train can make the 120 km (74 mi) journey from Beijing to Tianjin in about 30 minutes.
It's about six-and-a-half times as fast as a Porsche 911.
In other words, 613 meters per second is 6.710 times the speed of a Porsche 911, and the speed of a Porsche 911 is 0.1490 times that amount.
(for Porsche 911 Type 997 GT2, 2007 model)
The Porsche 911 GT2 has a top speed of 91.40 meters per second. It takes just 7.4 seconds for the GT2 to accelerate to 44.70 meters per second.